package com.sky.controller.admin;

import com.sky.constant.MessageConstant;
import com.sky.result.Result;
import com.sky.utils.AliOssUtil;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.UUID;

/**
 * 通用接口
 */
@RestController
@RequestMapping("/admin/common")
@Api(tags = "通用接口")
@Slf4j
public class CommonController {

    @Autowired
    private AliOssUtil aliOssUtil;
    /*@Value("${canqiong.path}")
    private String BasePath;

    *//**
     * 图片上传
     * @param file
     * @return
     *//*
    @PostMapping("/upload")
    @ApiOperation("图片上传")
    public Result<String> upload(MultipartFile file){
        //file是一个临时文件，需要转存到指定位置，否则本次请求结束后临时文件会删除
        //原始文件名
        String originalFilename = file.getOriginalFilename();
        String suffix = originalFilename.substring(originalFilename.lastIndexOf("."));

        //使用UUID生成随机文件名，防止文件名称重复造成文件覆盖
        String fileName = UUID.randomUUID().toString() + suffix;
        //创建一个目录对象
        File dir = new File(BasePath);
        //判断当前目录是否存在
        if(!dir.exists()){
            //创建目录
            dir.mkdirs();
        }
        try {
            //将临时文件转存到指定位置
            file.transferTo(new File(BasePath + fileName));
        } catch (IOException e) {
            e.printStackTrace();
        }
        return Result.success(fileName);
    }*/

    /**
     * 图片上传
     * @param file
     * @return
     */
    @PostMapping("/upload")
    @ApiOperation("图片上传")
    public Result<String> upload(MultipartFile file){
        log.info("文件上传：{}",file);
        try {
            //原始文件名
            String originalFilename = file.getOriginalFilename();
            //获取原始文件名后缀
            String extension =  originalFilename.substring(originalFilename.lastIndexOf("."));
            //构造新的文件名称
            String objectName = UUID.randomUUID().toString() + extension;
            String filepath = aliOssUtil.upload(file.getBytes(), objectName);
            return Result.success(filepath);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return Result.error(MessageConstant.UPLOAD_FAILED);
    }

  /*  *//**
     * 图片下载
     * @param name
     * @param response
     *//*
    @GetMapping("/download")
    @ApiOperation("图片下载")
    public void download(String name, HttpServletResponse response){
        try {
            //输入流读取文件内容
            FileInputStream fileInputStream = new FileInputStream(new File(BasePath + name));

            //输出流将文件内容写回游览器
            ServletOutputStream outputStream = response.getOutputStream();
            response.setContentType("image/jpeg");

            int len = 0;
            byte[] bytes = new byte[1024];
            while ((len = fileInputStream.read(bytes)) != -1){
                outputStream.write(bytes,0,len);
                outputStream.flush();
            }

            //关闭资源
            fileInputStream.close();
            outputStream.close();
        } catch (Exception e) {
            e.printStackTrace();
        }

    }*/
}
